Shaft coupling



Vthis specification. .p i. This invention isa novel shaft coupling,

Patented Nov. 3, 1925.

JESSE L'. iBosKEr, or iamennmronfnnwfvoak. l'.

sHArT ooUPLINe.

' 'Application tiled September 29, 1922. 'i A'Seria1'l\TVo.` 591,409.

To all ,whom t may concern.:

Be it known that I, JESSE L. BosKE'r, a citizen yof the United States,residing at Binghamton, in the Vcounty of Broome and State of New York,have invented certain new and useful Improvements in Shaft Couplings;and I hereby declare that the' followiiig'is a full, clear, and exactdescrip. tion-thereof, reference being hadto theaccompanying drawings,which form partof particularly designed. for connectingtoget-lier theabutting ends of aligned shafts of the same, or of dierent, diameters,without having toy disalign either shaft, orremove it from its bearings;said coupling also enables the shafts to be readily connected ordisconnected at any time, as desired.l

The object of the invention is to provide a shaft coupling simple inconstruct-ion and of great strength, vwhich will insure perfectalignment of the coupled readily and easily assembled or disassembled,applied or detached', and which can be readily adapted to couple alignedshafts of different diameters,'by using keys of suit-V able crosssection.

I will explain the invention with reference to the accompanying drawingswhich illustrate one practical embodiment thereof, to enable othersfamiliar with the art to adopt and use thesame,V and will su-,ininai'izein the claims the novel features of construction, and novel combinationsof parts, for which protection isdesired In the drawings: l

Fig. 1 is a transverse section through the shaft and coupling. i

F ig. 2 is a side view thereof, partly broken away.

Fig. 3 is a plan view thereof, partly broken away. t

As shown, the coupling comprises two opposite and complemental members lwhich are constructed alike, and are preferably approximatelysemi-circular in cross section; so that when assembled they form anapproximately cylindric body around the shaft. The particular exteriorform of the members, however, is immaterial. Each member 1 is providedon its inner face with a longitudinal groove 1a, which is preferablyrectangular in cross section, and

of a width slightly greater than the diameter of the largest shaft onwhich the coushafts, can be less than Ythe radius vof suchV shaft."members 1are groove with opposed perforations 1b, adaptl ed to receivebolts2 provided withnuts' 2@ for drawing the members 1 togetheri Themembers .1 are A' vided with.. recesses 1c the perforations lb.

pling `is tofbe used, and yof depth slightly.

Thev providedexteriorly' @to fthe? at' the outer ends of for theaccommodation of the'bolt-heads and of the. nut'SQfP, such preferablyflanged, orv pro-` bolt-heads and nuts `lying entirely lwithin` theouter circumference of the members 1,

so that they will not/catch extraneous ob-i jects wheiithe coupling isrotating.v 3

members neatly in Y These keys 3 are of suchv size that when the membersy1 with the keys 3 are assembled around the shafts S, S, 'as' shown, theinner' corneredges of said keys will bite into the periphery of theshaft sections S, S, as shown, and when the pling are drawn together bytighteniiigthe bolts 2,`tl 1e keys `3,.biting into1 the shafts S, S,will securelybind'the'shaftsY together. vWhen the coupling is applied-toaligned similarshaft sections S, S, as indicated in Figs. 2, 3, theshaft sections will belcaused to rotate together and the sections willbe held firmly and securely in axial alignment.

In assembling one half of the coupling is placed underneath the ends ofthe shaftsy to'` be coupled, with square keys of highly tempered'steelin each corner .of the rectangular slot, said keys being of such sizethat the inner corner thereof will touch vthe outer surface of the shaftwhentlie two parts of' the coupling are slightly separated. The

other half of the coupling is then similarlyl members of the cou-A l Inthe corners of the" groove-Sy -ltofboth' 1. arel placed- 'keys 3,whichaiel f preferably: square in` cross section, and yfittedV the',corners fof: the grooves la;

placed over the ends of the shaft and the two halves of the coupling aretheir` drawn together by bolts, causing lthe corners of the square keysin each corner of the square hole to press firmly lagainst Vthe surfacesof the Shafts to be coupled.

In assembling the common Vforms of couplings it is necessary to raise orlower the end of one of theI aligned shafts in order that the parts ofthe coup-ling, and the sleeve may be slipped thereon. great skill isrequired in bolting the coinmon forms'n of couplings together, so as notto throw the shafts out of alignment. Also in order to dismantle saidcouplings it is usu- Moreover,

" 1p1-ing, Comprising;

ally necessary to separate the parts of the coupling with a chisel orwedge, and then drive the sleeve olf the shaft, necessitating,` theraising or lowering of the end of one of the shafts, to permit thecoupling sleeve to be slipped oii. But, in assembling my novel coupling,all that is necessary is to place the members l of the coupling `uponopposite sides of the aligned shafts S, S, place the bolts. 2 in theholes 1b, and slip the keys 3 into their proper positions in the grooves1, and then Vtighten the bolts 2,

1 which operations 'canl be performed withoutv directionI only. Such.couplings, however,

` for the rocker arms in; 'tanneries y have broken the strongestcouplings of the have not been found` to be of suiicient strength for ashaft which has a motion first in one. direction and then in the reversedirection, or forv an oscillating motion, such asused andthe` like. Y Y

.Inv practical. use, my'novel coupling. on a 2?" shaft has stoodeffectively strans'which usual form, and which at times have. been so`great as to burst the shaft.

By using two `different sizes of keys 3. in opposite` ends of the 'samecoupling, shafts of` different diiametersmay be coupled together. Thisis a great advantage as the saine size coupling. maybe used forconplingdifferent sizes 'of alignectshafts'.I Further-V more, this inventionwill, enable shaft sections S, Si of equal but varying diameters to be`alsoA coupled together by using keys 3 of varying. sizes according 'tothe diameter of the shafts. n

What I claim is:

l. A shaft coupling, comprising two complemental members adapted tosurround the abutting ends of two aligned shafts, each member having anangularl longitudinal groove in its inner. facev of greater width thanthe'diame'ters of the shafts, and adapt-` ed to loosely receive the'shafts; mean'sfor forcibly drawing the members -together yangul-archangeable kkeys adapted to be placed in the angles of said grooves,and. when so placed one of the angular portions of each of saidkeysbeing adaptedV to-engage the relatedangley of said groove, and anotheran*- gular edge of each key 'to bite the shafts when. said members aredrawn'together, substantially as described; A l

2. A coupling. for aligned shafts compris,

ing twov opposite similar complemental mem-Y bers substantiallynsemi-circular in cross seca. tion, adapted together to'for-m a'substantial-v ly cylindricbody, each member having a recg tangularlgroove in `i'ts inner faceslightly greater in width thanthev diameter ofthe largest 'shaft on which they coupling is to be used, and slightlyless indepth than the .ra- -dius of said shaft, said members havingholes outside said grooves; bol't's engaging said holes for drawing themembers to-v gether; and; rectangular keys adapted to fit inthe. cornersof said' grooves whereby'two faces of eachV of said keys will engage thewalls of said grooves, the inner edges of 'said keys beingvadapted toYbite the shafts when saidmembers are drawn together, vsubstantially asdescribed. v

In testimony that I claim* the foregoing as my own I aflzr my signature.

.nisse L, Bosnnr.

